<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="信息描述">
        <el-tag type="info">excel模版说明</el-tag>

        <el-tag>
          <i class="el-icon-download" />

          <a :href="this.OSS_API + '/2023/01/11/example.xlsx'">点击下载模版</a>
        </el-tag>
      </el-form-item>
      <el-form-item label="选择Excel">
        <el-upload
          ref="upload"
          :auto-upload="false"
          :on-success="fileUploadSuccess"
          :on-error="fileUploadError"
          :disabled="importBtnDisabled"
          :limit="1"
          :action="this.BASE_API + '/eduservice/subject/addSubject'"
          name="file"
          accept="application/vnd.ms-excel"
        >
          <el-button
            slot="trigger"
            size="small"
            type="primary"
          >选取文件</el-button>

          <el-button
            :loading="loading"
            style="margin-left: 10px"
            size="small"
            type="success"
            @click="submitUpload"
          >{{ fileUploadBtnText }}</el-button>
        </el-upload>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
export default {
  data() {
    return {
      BASE_API: process.env.VUE_APP_BASE_API, // 接口API地址

      OSS_API: process.env.VUE_APP_OSS_API, // 阿里云OSS地址

      fileUploadBtnText: '上传到服务器', // 按钮文字

      importBtnDisabled: false, // 按钮是否禁用,

      loading: false
    }
  },
  created() {},
  methods: {
    // 点击按钮上传文件到接口
    submitUpload() {
      this.importBtnDisabled = true
      this.loading = true
      this.$refs.upload.submit()
    },
    // 上传成功
    fileUploadSuccess({ results, header }) {
      this.loading = false
      this.$notify({
        type: 'success',
        message: '添加课程分类成功',
        showClose: false
      })
      // 跳转课程分类列表
      this.$router.push({ path: '/subject/list' })
    },
    // 上传失败
    fileUploadError() {
      this.loading = false
      this.$notify({
        type: 'error',
        message: '添加课程分类失败',
        showClose: false
      })
    }
  }
}
</script>
